Paste tube cap



A. J. STREHS PASTE TUBE CAP Nov. 7, 1933.

Filed May 5, 1932 Patented Nov. 7, 1933 PATENT OFFICE PAs'rE TUBE (DAPv Adam J. Strehs, Miami, Fla. I Application May 5, 1982. serial No. 809,476

4 Claims.

This invention relates to certain new'and useful improvements in paste tube cap.V

The primary object of the invention is to provide a cap for paste tubes of the Character disclosed in application for patent filed by Adaml J. Strehs on May 2, 1932, Serial Number 608,771 andV embodies a simplified construction of closure means for the discharge nozzle of the tube confined within the cap and operated during inward and outward movement of the cap onV the tube neck to be shifted to opened and closed positions relative to the discharge nozzle.

A further object of the invention is to provide a cap for paste tubes of the foregoing character wherein the closure means or valve for the discharge nozzle of the tube is carried by the underside of the top wall of the cap to be shifted to opened or closed positions relative to the discharge nozzle of the tube by means carried by the tube neck and associated therewith.

With the above and other objects in Viewithat Will become apparent as the nature of the invention is better understood, the same consists in the novel form, combination and arrangement of parts hereinafter more fully described, shown i in the acccrnpanying drawing and claimed.

In'the drawing:- Figure 1 is an upper end elevational view of the assembled tube and cap with thevvalve device in closed position relative to the discharge nozzle of tl e tube;

Figure 2 is a fragmentary side elevational view of the tube With the cap shown in section and illustrating the cap and closure valve vfor the discharge nozzle in closed position;

Figure 3 is an upper end elevational view of the assembled tube and cap with the cap'and valve device in open position, the latter being shifted laterally of the discharge nozzle of the.

tube;

Figure 4 is a fragmentary side elevational view of the tube and cap shown inrsection and in its open position with the discharge nozzle of the tube projected through an opening inf the top wall of the cap;

Figure 5 is a horizontal sectional view taken on line 5-5 of Figure 2;

Figure 6 is a horizontal sectional view taken on line 6-6 of Figure 4; i

Figure 7 is a side elevational view of the valve device for the discharge'nozzle of the tube removed from the tube cap; and

Figure 8 is an enlarged fragmentary side elevational view of the upper end of the tube,

.means carried by the tube neck upon operation showing the slot formation therein for guiding the cap in movements over the tube neck;

Referring more in detail tol the accompanying drawing, the reference numeral 10 designates a co'ntainer for viscous substances such as tooth paste, dental or shaving cream, or similar substances, the container 10 being Vpreferably in the form of a collapsible tube that is closed at one end and carrying at its other end a' rigid neck portion 11 from which a discharge nozzle 12 that is open at its outer end centrally projects. Diametrically opposite sides of the tube neck 11 are provided 'with inclined or cam grooves 13 merging at their outer ends into relatively short annular groove portions 14, the V terminal ends of which 'groove portions 14 are inclined inwardly or toward the tube 10 as at 15. The cap for the tube is associated with the tube neck 11 and includes a top wall 16 carrying an annular skirt or fiange 17 that carries at its free edge diametrically opposite inwardly directed lug's 18 working in cam and groove portions 13,14 and 15 as will at once be obvious from an inspection of Figures l2 and 4. lThe top wall 16 of the cap is provided with'a central opening 19 through which the vopen end of the discharge nozzle '12' is adapted to be projected when the `cap is moved to an open position as shown in Figure 4. w 35 A closure valve is provided for the discharge noz-zle 12 and is confined within the tube cap, being carried by the under face of-the top wall 16 of the cap and automatically operated by of the cap to be shifted to open and closed positions relative to the discharge nozzle. The closurevalve for therdischarge nozzle includes a plate or arm of the configuration best illustrated in Figures 5 and 6, having an intermediate portion 20, vparallel perpendicularly extending walls 21 and 22, the free end of the wall 21v carrying an outwardly directed fiange 23 while the free end of the wall ,22 carries an outwardly directed valve plate 24, the fiange 23 and valve plate 24 being disposed in the same plane and in wiping contact with the underside of the top wall 16 of the cap with the intermediate portion 20 thereof spaced from the cap and retained in such position by the pivot pin 25 in the top wall of the cap. The i intermediate portion 20 of thev valve device is provided with a curved cam slot 26v having the end thereof adjacent the wall 21 of the valve device laterally directed as at 27 for purposes presentIy to appear, 'I'he' perp'endicular pin 28 rising from the upper face of the tube neck 11 entering the slot 26.

.i When' the cap is disposed at its limit of out- Ward movement relative to the tube neck 11, the same is in closed position with the plate valve 24 of the valve device overlying the open outer end of the discharge nozzle 12 and being disposed inwardly of the opening 19 inthe top wall 18 of the cap. To place the cap and valve plate 24 in closed position, the lugs 18 carried by the cap fianges 17 move upwardly through the cam portions 13 of the neck slot and through the relatively short annular portions 14 thereof and when the lugs 18 reach the forward ends of the annular slot portions 14, the pin 28 is disposed in the end of the slot 26 adjacent the wall 21 of the valve arm. Further movement of the cap in the direction of closing movement thereof outwardly of the neck 11 causes the lugs 18 of the cap to move downwardly or inwardly through the inclined VportyionsM 15 of :the neck groove, the valve device remaining immovable but carried slightly inwardly with the cap to cause binding engagement thereof on the open outer end of the discharge nozzle 12. To move the cap and valve device to open position, the cap is moved inwardly upon the tube neck 11 tol the position illustrated in Figures 4 and 6, the cap lugs 18 travelling through the groove portions 14 and 13 in the necl, while the cam slot 26 in thentermediate portion 20 of the valve arm causes a lateral swinging movement of the valve arm by the presence ofthe pin 28 extending into the cam slot so that the valve plate 24 is shifted laterally of the discharge nozzle 12 to assume the position shown in Figure -6 and at which time the discharge nozale 12 is `projected through the opening 19 of the top Wall of the cap for the free discharge of the contents of the tube therethrough. When moving the cap and valve device to closed position with respect to the dis-charge nozzle 12, the cap is rnoved outwardly of the tube neck 11, being guided in its movement by the cam groove 13 and annular groove portions 14, the pin- 28 and cam slot 26 being so related one to the other to cause the valve plate 24 of the Valve device to overlie the discharge nozzle 12 when the cap is at its limit of outward movement, continue'l movement of the cap in the same direction causing a slight inward movement thereof upon the neck 11 occasioned by the inclined portion 15 of the neck groove for more securely sealing theV It will be noted outlet of the discharge nozzle. that the valve device is positively moved from open to closed positions relative to the discharge nozzle as contrasted with spring orresilient devices and that the tube closure is of extremely simple construction embodying comparatively few parts and is capable of inexpensive manufacture, as Well as being of a highly sanitary character and protecting the contents of the tube.

While there is herein shown and described the preferred embodiment of the invention, it is nevertheless to be understood that minor changes may be made therein without departine from the spirit and scope of the invention as claimed.

I claim:

1. In a receptacle closure, a receptacle having a neck and discharge nozzle, cam grooves in the neck, a cap having side lugs working in the cam grooves and a top opening through which the nozzle is adopt-ed to be projected, a valve plate pivotally mounted Within the cap to overlie the nozzle, and means carried by the neck and cooperating With the valve plate to move the same to open and closed positions relative to the nozzle upon movement-s of the cap on the neclr.

2. In a recept'acle closure, a receptacle having a neck and discharge nozzle, cam grooves in the neck, a cap having side lugs working in the cain g'rooves and ajtop opening through which the nozzle isv ae pted to be projected, a valve plate pivotally mountcd within the cap to overlie the nozzie, and means carried by the neck and cooperating with the valve ate to move the same to open. and closed po ons relative to the nozzle upon inovements of the cap on the neck, includ'ng a pin rising from the neck and the valve plate spaced upwardiy of the neck and having a cam slot therein into which the in e'tends whereby upon movement of the cap inwardly and out -Yardly of the neck the valve plate is laterally ed relative to the nozzaie.

3. In a colla' rile tube, a tube having a neck and discharge nozzle rising centrally of the neck, said neck having cain grooves therein and a pin ri g i oni the cl; laterally of the nozzle, a ing in the cam groove and a top opening ed with the nozzle and through which the nozzle adapted to be projccted, and a valve plate pivotally inounted on the underside of the cover and having a cam slot therein into which the pin extends for moving the valve plate relative to the nozzle'upon .rotative inward and outward movement of the cap on the tube neck. o

4. In a collapsible tube, a tube having a neck and discharge nozzle rising centrally of the neck, said necl'having canigrooves therein and a pin rising from the necl laterally of the nozzle, a cap having lugs Working in the cam groove and. a top opening alined with the nozzle and through which the nozxle is adapted to be projected, a valve plate pivotally mounted on the underside of the cover and having a cam slot therein into which the pin extends-for moving the valve plate relati've to the nozzleupon rotative inward and outward movement of the cap on the tube neck, the end of 'the valve plate cpposite the pvot adapted to overlie the dischai'ge nczzle and the intermediate portion of the valve plate being spaced from the top wall of the cap to permit passage of the pin through the cam slot.

i 'ADAM J. STREHS. 

